.about {
    width: 100%;
    font-family: '黑体';
}
.about1 {
    width: 100%;
    margin-top: 10px;
    margin-bottom: 10px;
    height: 500px;
    display: flex;
    justify-content: center;
}
.about2 {
    width: 75%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    border: 1px solid #e5e5e5;
}